The errors in previews have alignment issues

[Leo Arias]

I'm testing the alecu's branch: https://code.launchpad.net/~alecu/unity-lens-music/musicstore-purchase

When I try to download a song but there's an error, I'm presented with a screen like the one in the attachment. As you can see there, the full error message is not visible and the continue button in not under the message.

To reproduce:
Make sure you will get an error: either you are not signed in to ubuntu one on the desktop, or don't have the unattended payments properly set in ubuntu pay.

Click the Dash icon.
Click the Music lens icon in the bottom of the dash.
Search for **Bob Dylan**.
Click the first album.
Click the **Download** button.